"Almost" because 2 uses of the v1 asserter remain (as they are deliberate).
Closes#10518
* github.com:scylladb/scylla:
tests: remove obsolete utility functions
tests: less trivial flat_reader_assertions{,_v2} conversions
tests: trivial flat_reader_assertions{,_v2} conversions
flat_mutation_reader_assertions_v2: improve range tombstone support